Aqualung Transmitter Rev2Aqualung Transmitter Rev2 The Aqua Lung Transmitter works with a compatible wrist computer to help you monitor current pressure and remaining air time. It eliminates the need for a stiff high pressure hose while keeping a streamlined profile. The Aqua Lung Pressure Gauge shows both remaining air pressure and temperature on one easy to read display. Aqualung Transmitter Rev2 Features Hoseless Air Pressure Transmission for i450T, i470TC, and i770R